Mobile CARB Testing Across Northern California: The Industries Keeping Our Region Moving
By NorCal CARB Mobile | February 2026
From the ag fields of Yuba City to the tech corridors of San Jose, Northern California runs on diesel. And behind every delivery truck, concrete mixer, and equipment hauler is a business owner making sure their fleet stays CARB compliant.
At NorCal CARB Mobile, we bring Clean Truck Check testing directly to your yard—no downtime, no hauling trucks across town. Over the past few months, we've had the privilege of serving businesses across a wide range of industries throughout the region.
The Industries We Serve
Construction & Paving Concrete trucks, pavers, and heavy equipment don't stop for compliance deadlines. We've worked with construction crews from Granite Bay to Santa Rosa, testing everything from mixers to dump trucks. Companies like Granite Bay Concrete trust us to keep their fleet rolling without pulling trucks off the job.
Trucking & Transportation Whether it's long-haul freight out of Stockton or local delivery runs through the East Bay, trucking companies need fast, flexible testing. We've served fleets in Woodland, Lathrop, Tracy, and throughout the Central Valley.
Equipment Dealers & Rentals From Hayward's industrial corridor to Concord, equipment dealers need their rental fleets compliant and ready for customers. We handle everything from forklifts to excavators.
Moving Companies Rancho Cordova, San Rafael, and beyond—moving companies operate on tight schedules. We test box trucks on-site so they're back on the road the same day.
Tree Service & Landscaping Chipper trucks, crew vehicles, and equipment trailers all need testing. We've served tree services from El Dorado Hills to Brentwood, including JC Tree Service out in the East Bay.
Towing & Auto Services Tow trucks run 24/7. We come to the yard when it works for you—early morning, between calls, whenever the truck is available.
Cities We Cover
Our service area spans Northern California:
Sacramento Region: Sacramento, West Sacramento, Roseville, Rocklin, Rancho Cordova, Folsom, Woodland, Davis, Yuba City
Bay Area: San Jose, Hayward, Fremont, Union City, San Leandro, Oakland, Concord, Livermore, Palo Alto
Central Valley: Stockton, Tracy, Lathrop, Manteca, Turlock
Wine Country: Napa, Santa Rosa, Petaluma, San Rafael
If you're within a reasonable drive of Sacramento or the Bay Area, we can probably get to you.
Why Mobile Testing Makes Sense
Every hour a truck sits at a testing station is an hour it's not earning. Our mobile service eliminates that problem. We come to your location—your yard, your job site, your parking lot—and get your trucks tested and back to work.
HD-OBD tests start at $75. Smoke opacity testing for older engines starts at $199. Fleet discounts available.
Ready to schedule? Call or text us at 916-890-4427 or book online at norcalcarbmobile.com.
NorCal CARB Mobile LLC is a CARB-certified Clean Truck Check testing provider serving Northern California.
